He added a temperature probe to the refrigerator, and then constructed a pair of tools that he could use to measure how much beer was left in the keg. The volume monitors include a scale built using a pair of pressure sensors from SparkFun, and a flow sensor installed in the beer line.

[Evan] scored an old Chevy gauge cluster and cleaned it up before installing a pair of analog meters which he used to show the keg’s temperature and “fuel” level. Since he feels no project is complete without some LED love, he added a few of them to the display without hesitation. The LEDs calmly pulsate when the keg sits idle, but spring to life and begin flashing when the flow sensor is activated.

As evidenced by this pair of keg monitoring systems, we think that you can never have enough information when it comes to your beer stash, so we really like how this project came together.

Be sure to check out his kegerator’s gauge cluster in the video below.

@captain obvious: you can type in any name you want in the “Name” field of the reply form. there could be 15 different comments from “fartface” and that in no way means all 15 comments are from the same person. i figured that was obvious to everyone, but it must have eluded you.

@fartface,
wow, you’re totally right. I didn’t realize you were so e-famous as to have a horde of impersonators trolling the hackaday comments in an effort to make you look like you’re just being a contrarian jerk. Well then, I’ll just watch for the one polite and insightful one to know who is you.

@fartface – With the limited fridge space, I couldn’t find a scale that would fit so I had to make my own. Didn’t take too long either.
@mjrippe – The lights do act in a manner similar to what you described. I just had it in a “test” mode for the video.

I got a beverage air kegerator cheap from my neighbor. There’s not much spare room. My set used a load cell next to the keg connected by an “S” shaped bar and two pivot points. The guage is a 15V meter where 15V = 15 gallons. It’s very accurate.